Engine Powertrain Spare Parts
When a diesel engine starts burning oil or losing compression, the fix usually traces back to a worn cylinder liner, scored piston, or tired ring pack. This category covers the internal hard parts that keep heavy-equipment engines running: engine blocks, pistons and liners, crankshafts, bearings, head gaskets, and full gasket sets, along with the systems bolted to them — turbochargers, fuel injection components, and water pumps. These are the parts that decide whether a machine makes rated power or sits in the yard.
Whether you are rebuilding after a coolant intrusion or replacing an injector that is dumping fuel, 3GEN sources 100% OEM components for diesel engines across 40+ supported brands. Send us a machine serial number, an OEM reference, or a photo of the casting number and our parts specialists will match it against a cross-reference database of 564,000+ part numbers. Most orders are prepared in 1–2 days and arrive in 5–7 days door-to-door, shipped free with tracking worldwide, to any country, with duties and taxes already paid.
Frequently Asked Questions
What Engine Parts Do You Stock?
We carry internal and external diesel engine components: pistons, cylinder liners, crankshafts, main and rod bearings, turbochargers, full gasket and overhaul sets, fuel injection parts, and water pumps. Coverage spans 40+ brands of construction, mining, and industrial engines, all 100% OEM, drawn from a cross-reference database of 564,000+ part numbers.
How Do I Confirm A Piston Or Liner Will Fit My Engine?
Give our parts specialists your engine serial number or an OEM reference and they cross-check bore size, pin diameter, and liner protrusion before quoting. If you only have a worn part, send a photo or technical drawing. We supply 100% OEM parts, so every piston and liner matches the original specification.
Should I Replace Bearings And Gaskets When Fitting New Pistons?
Yes. During a piston or liner job the engine is already open, so renewing main and rod bearings, the full gasket set, and seals avoids a second teardown later. Reusing old bearings against fresh pistons risks uneven wear and oil-pressure loss. Order the components together and we can ship most items free worldwide with tracking, typically 5–7 days door-to-door.